JP4016182B2 - Conical ribbon mixing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for performing any one or a plurality of treatments of mixing, crushing, and drying of processed materials, and in particular, there are operating conditions such as properties, amount of processed materials, rotation speed of rotor blades, and the like. The present invention relates to a conical ribbon mixing treatment apparatus that can perform stable operation even when it fluctuates.
[0002]
BACKGROUND OF THE INVENTION
Conventionally, a conical ribbon mixing apparatus D ′ has been used as an apparatus for mixing, crushing, or drying various foods, feeds, pharmaceuticals, chemicals, and the like.
The apparatus shown in FIG. 6 is a conical ribbon mixing / drying machine D2 ′, which is an example of a conical ribbon mixing / processing apparatus D ′, which includes a rotary blade 5 ′ in an inverted conical processing tank 1 ′. A rotating flow of the processed product W is caused to occur in the entire processing tank 1 ′ by the rotary blade 5 ′ so that the performance of mixing, crushing and drying of the processed product W is enhanced.
[0003]
The rotary blade 5 'is formed by attaching a spiral belt-like ribbon blade 52' to a rotary shaft 50 'provided at the center of the treatment tank 1' using a support bar 51 '. Is positioned close to the inner wall surface of the treatment tank 1 '.
Then, while rotating the rotary blade 5 ′, when the processing object W is introduced from the charging port 17 ′ formed in the upper part of the processing tank 1 ′, the processing object W becomes a spiral ribbon blade 52 ′ in the processing tank 1 ′. While being guided, it rises along the inner plate 10 '(inner wall) of the processing tank and reaches the position of the vortex breaker 6' provided in the upper part of the processing tank 1 '. Will fall from here.
Thereafter, the processed product W is subjected to any one or more of mixing, crushing, and drying while circulating through such a path.
[0004]
The above is the standard configuration and operation mode of the conical ribbon mixing processing apparatus D ′. When a small amount of the processing object W is to be processed in such a conical ribbon mixing processing apparatus D ′, the processing object is processed. W did not reach the vortex breaker 6 'provided in the upper part of the processing tank 1', causing a stagnation in the circulating flow of the processed product W, resulting in a decrease in the mixing property and a poor drying. Further, in order to allow the processed material W to reach the vortex breaker 6 ', it is necessary to increase the rotational speed of the rotary blade 5'. However, the remarkably high speed rotation causes the particles of the processed material W to be destroyed and the properties of the processed material W to be impaired. In addition, since the power consumption is increased, the economy is reduced.
[0005]
Therefore, even when the amount of the processed material is small, the applicant can make the processed material reach the eddy current breaker without increasing the rotational speed of the rotor blade, and sufficiently circulate the processed material. A device capable of performing the above has been developed (patent application 2001-270288), and the above problems have already been solved.
[0006]
However, since a wide variety of processed products are targeted and the operating conditions of the apparatus are different, problems that were not anticipated have become apparent as the apparatus is actually operated. As one specific example, a phenomenon such as a phenomenon in which power consumption increases despite the fact that the rotational speed of the rotor blades is not increased and a phenomenon such as insufficient drying due to a decrease in the circulation of the processed material have been confirmed.
[0007]
As a result of subsequent investigations, it has been found that the increase in power consumption and the decrease in the circulation of the processed material are caused by the structure of the vortex breaker. That is, in particular, assuming that the amount of the processed material W that is too small relative to the capacity of the processing tank 1 ′ is added, in addition to the upper vortex breaker 6A ′ located in the upper part of the processing tank 1 ′, from the intermediate height position of the processing tank 1 ′ In addition, in the conical ribbon mixing treatment apparatus D ′ provided with the lower vortex breaker 6B ′ at the lower side, the lower vortex breaker 6B ′ is buried in the treatment W when the input amount of the treatment W increases. For this reason, the lower vortex breaker 6B ′ becomes an obstacle to the circulating flow of the processed product W in the processing tank 1 ′, and the smooth circulation of the processed product W is hindered.
[0008]
[Technical problem to be solved]
The present invention has been made in view of such a background, and while reducing the resistance of the vortex breaker to the processed material, it does not hinder the circulation of the processed material in the processing tank, and the properties of the processed material. The technical problem is to develop a new conical ribbon mixing apparatus that can perform stable operation even when the operating conditions such as the amount or the rotational speed of the rotor blades fluctuate. .
[0009]
[Means for Solving the Problems]
That is, in the conical ribbon mixing treatment apparatus according to the first aspect, a part or all of the treatment tank is formed in an inverted conical shape, and the treatment object is placed on the inner wall by the ribbon blade provided in the rotary blade provided in the treatment tank. along is raised, by moving the elevated treated near the center of the treatment tank by the vortex breaker, while repeating that dropping the treated product to the treatment tank bottom, mixing of treated, crushing, drying In the conical ribbon mixing treatment apparatus for performing any one or a plurality of treatments, the vortex breaker is formed by fixing a breaker body to an inner wall surface of a treatment tank using a fixed bar, breaker body, by those which gave inclination angle rake guiding action surface is a surface in contact with the treated product, it constitutes a force acting on the treated by the rotary blade to disperse It is intended that comprised as said.
According to this invention, in order to reduce the resistance of the eddy current breaker to the processed material, the eddy current breaker does not hinder the circulation of the processed material, and any one of mixing, crushing, and drying of the processed material Alternatively, it is possible to prevent a plurality of processing efficiencies from decreasing. For this reason, the power consumption of the motor which rotationally drives the ribbon blade can be reduced.
[0010]
In addition to the above requirements, the conical ribbon mixing apparatus according to claim 2 is characterized in that the guide action surface of the breaker body is twisted.
According to the present invention, the force acting on the treatment object by the rotary blade can be effectively dispersed into the horizontal component toward the center of the treatment tank and the component whose direction changes in the vertical plane. The processed material transferred to the upper part of the tank can be moved smoothly and effectively to the vicinity of the center of the processing tank, and the processed object can be dropped to the lower part of the processing tank. For this reason, the fall of the processing efficiency of any one or several among mixing, crushing, and drying of a processed material can be reduced significantly.
[0011]
Furthermore, in addition to the above requirements, the conical ribbon mixing treatment apparatus according to claim 3 is characterized in that the vortex breaker is provided below an intermediate height position of the treatment tank.
According to the present invention, the circulatory flow of the treatment object is conventionally also observed in an apparatus in which the vortex breaker has become an obstacle to the circulatory flow of the treatment object in the treatment tank because the vortex breaker is buried in the treatment object. And the power consumption of the motor that rotationally drives the ribbon blades can be reduced.
The above-described problems can be solved by using the requirements described in these claims as means.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
(I) Embodiment 1
The conical ribbon mixing apparatus of the present invention will be described below based on the illustrated embodiment. What is indicated by a symbol D in the figure is a conical ribbon mixing apparatus, and FIG. 1 shows a conical ribbon mixer D1 as an example.
This is a device for mixing and stirring the processed material W introduced into the processing tank 1 by the rotary blade 5, and includes a motor M, a speed reducer 3, the rotary blade 5, and a vortex breaker 6. Hereinafter, these components will be described in detail.
[0013]
The treatment tank 1 includes a conical portion 1A formed by forming an appropriate metal material in an inverted conical shape, and a cylindrical portion 1B connected to the upper portion of the conical portion 1A. By closing with the plate 12, the internal space of the processing tank 1 is used as a processing space for mixing and stirring.
An input port 17 is formed for the top plate 12, and a discharge port 18 is formed in the lower part of the processing tank 1.
[0014]
A motor M and a speed reducer 3 are provided on the top plate 12, and an output shaft thereof is connected to a rotary shaft 50 in a rotary blade 5 disposed in the processing tank 1, and the rotary shaft 50 is axially connected to the rotary shaft 50. The support bar 51 is fixed along. Then, by attaching two narrow ribbon blades 52 to the end portion of the support bar 51 in a state where the phase is shifted by 180 °, a tapered spiral blade 5 is configured. . The ribbon blade 52 is cut out over a certain interval so that the ribbon blade 52 does not hit the vortex breaker 6.
Further, the rotary blade 5 may be configured to include only one ribbon blade 52.
[0015]
Further, in the treatment tank 1, two pairs of vortex breakers 6 having a positional relationship facing each other in plan view are provided in the same horizontal plane, and in this embodiment, as an example, there are multiple stages in three horizontal planes. It should be included in the shape.
These vortex breakers 6 are used to drop the processed product W to the lower portion of the processing tank 1 by moving the processed product W that has risen along the inner plate 10 of the processing tank to the vicinity of the center of the processing tank 1 by the rotary blades 5. It is a member. In this embodiment, at least a pair of vortex breakers 6 is provided below the intermediate height position of the processing tank 1.
In addition, when it is necessary to distinguish these vortex breakers 6 of each stage, they are referred to as an upper vortex breaker 6A, a middle vortex breaker 6B, and a lower vortex breaker 6C, respectively.
[0016]
The upper vortex breaker 6A, the middle vortex breaker 6B, and the lower vortex breaker 6C have the same configuration, although the sizes differ depending on the circumference of the treatment tank 1 installed. Specifically, as shown in FIGS. 2 and 3, the breaker body 61 is fixed to the inner wall surface of the processing tank 1 using a fixing bar 62. The breaker body 61 is configured to disperse the force acting on the workpiece W by having an arc shape in plan view and having a rake inclination angle θ on the guide action surface 61S. Here, the rake inclination angle θ means an angle between the guide action surface 61S which is a surface in contact with the workpiece W in the breaker body 61 and a horizontal plane as shown in FIG.
In this embodiment, the guide action surface 61S is twisted by bending the plate member of the breaker body 61. The guide action surface 61 </ b> S is twisted to the opposite side to the rotation direction of the rotary blade 52 as viewed from the side of the attachment portion with respect to the inner wall surface of the treatment tank 1. That is, in this embodiment, the breaker body 61 has a right-handed shape, and the direction of the force acting on the workpiece W by the rotary blade 52 changes in the horizontal component toward the center of the treatment tank 1 and in the vertical plane. Can be effectively dispersed in the components to be treated. The twisting direction of the guide acting surface 61S may be the same side as the rotating direction of the rotary blade 52. Further, when the guide action surface 61S is formed on the breaker body 61, a part of a prismatic or triangular metal block may be cut and processed.
[0017]
The conical ribbon mixer D1 which is an example of the conical ribbon mixing apparatus D of the present invention is configured as described above as an example. Hereinafter, together with the operation state of the conical ribbon mixer D1, the processing tank The state of the processed material W in 1 will be described.
First, the case where the effect of the present invention is remarkable and the amount of the processed material W is large will be described. As shown in FIG. 4A, for example, the treatment tank 1 having a capacity of 1000 liters is treated with 800 liters. The case where the thing W is thrown in is demonstrated.
First, the motor W is started to rotate the rotary blade 5 while the processed material W is introduced into the processing tank 1 from the charging port 17, and the entire processed material W is formed in a spiral ribbon blade in the processing tank 1. It will rise along the inner wall of the processing tank 1 while being guided by 52.
[0018]
When the workpiece W reaches the position of the upper vortex breaker 6A, the workpiece W is effectively guided by the breaker body 61, is brought to the center, and is dropped from here. Thereafter, the workpiece W follows such a path. A mixing and stirring process is performed while circulating.
At this time, according to the present invention, the vortex breaker 6 does not hinder the circulation of the workpiece W, and even if it is the lower vortex breaker 6C or the interrupted vortex breaker 6B that is always buried in the workpiece W. The circulation of the processed product W is not significantly hindered. For this reason, the power consumption of the motor M that rotationally drives the ribbon blade 5 can be reduced. Specifically, in this embodiment, the power consumption is approximately compared to the case where a conventional vortex breaker is used. Reduced by 30%. Further, as described above, the eddy current breaker 6 has a reduced resistance to the workpiece W as compared with the conventional eddy current breaker 6 ', and therefore can be set longer than the conventional one.
[0019]
As shown in FIG. 4B, when the amount of the processed product W is small, for example, when 200 liters of the processed product W is put into the processing tank 1 having a capacity of 1000 liters, the conventional shape is obtained. Compared with the case where the vortex breaker 6 'is used, the power consumption is reduced to only a few percent. Therefore, the lower vortex breaker 6C or the interrupted vortex breaker 6B buried in the workpiece W in the conventional apparatus is used. It can be confirmed that the circulation of the processed product W has been inhibited.
[0020]
(Ii) Embodiment 2
Next, a conical ribbon mixing / drying machine D2 as an example of the conical ribbon mixing processing apparatus D will be described. As shown in FIG. 5, this apparatus mixes and stirs the processed product W introduced into the processing tank 1 with the rotary blade 5 and exhausts the condensable gas (water vapor) generated by heating the processed product W. And it is an apparatus for drying, mixing, and crushing the processed product W.
The conical ribbon mixer / dryer D2 includes the processing tank 1, the heat medium circulator 2, the motor M, the speed reducer 3, the rotary blade 5 and the vortex breaker 6 as main components. The elements will be described in detail, but a detailed description of the rotary blade 5 and the vortex breaker 6 having the same configuration as the conical ribbon mixer D1 will be omitted here.
[0021]
The treatment tank 1 is provided with a similar inverted-cone-shaped jacket outer body 11 at an appropriate interval with respect to substantially the entire outside of the treatment tank inner plate 10 formed in an inverted conical shape. 10 and the upper opening of the jacket outer body 11 are closed by a top plate 12, so that the inner space of the processing tank inner plate 10 is used as a processing space for the drying process.
[0022]
In addition, a jama plate 13 is appropriately provided between the treatment tank inner plate 10 and the jacket outer body 11 to connect both members, and a circulation path for a heat medium such as cold water, hot water, steam, and oil is formed. Is. An inflow pipe 14 is attached to the lower part of the jacket outer body 11, while an outflow pipe 15 is attached to the upper part of the jacket outer body 11, and the heat medium circulator 2 is connected to the inflow pipe 14 and the outflow pipe 15.
Further, when the inside of the processing tank 1 is depressurized and dried, auxiliary equipment such as a condenser and a vacuum pump is provided on the rear side of the exhaust port 16 formed in the top plate 12. An input port 17 is formed for the top plate 12, and a discharge port 18 is formed below the processing tank 1.
[0023]
Then, the processed product W introduced into the processing tank 1 is mixed and stirred by the rotary blades 5, and the processed product W is heated by the heat medium supplied from the heat medium circulating machine 2, thereby generating generated condensable gas (water vapor). ) Is exhausted to dry, mix and crush the processed product W.
Therefore, the processed product W before drying naturally contains a lot of moisture, and the load applied to the vortex breaker 6 is large. However, according to the present invention, the eddy current breaker 6 inhibits the circulation of the processed product W. In particular, even in the lower vortex breaker 6C that is always buried in the workpiece W, the circulation of the workpiece W is not significantly hindered.
[0024]
【The invention's effect】
According to the present invention, while reducing the resistance of the vortex breaker 6 with respect to the processing object W, the circulation of the processing object W in the processing tank 1 is not hindered, and the property, amount or rotation of the processing object W is prevented. Even when operating conditions such as blade rotation speed fluctuate, stable operation can be performed and power consumption can be further reduced.
For this reason, especially when it is necessary to make the rotation speed of the rotary blade 5 lower than a predetermined value in order to prevent deterioration in quality depending on the properties of the processed product W, the processed product W having a large apparent density or a process having low fluidity due to physical properties. It becomes possible to deal with the case of processing the object W or the like.
[Brief description of the drawings]
FIG. 1 is a skeletal longitudinal side view showing a conical ribbon mixing machine which is an example of a conical ribbon mixing treatment apparatus of the present invention.
FIG. 2 is a plan view showing a vortex breaker.
FIG. 3 is a perspective view showing the inside of a conical ribbon mixer.
FIG. 4 is an explanatory diagram showing a state of circulation of a processed product.
FIG. 5 is a skeletal longitudinal side view showing a conical ribbon mixing and drying machine which is an example of the conical ribbon mixing treatment apparatus of the present invention.
FIG. 6 is a skeletal longitudinal side view showing a conventional conical ribbon mixing dryer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Processing tank 1A Conical part 1B Cylindrical part 10 Processing tank inner plate 11 Jacket outer body 12 Top plate 13 Jama board 14 Inflow pipe 15 Outflow pipe 16 Exhaust port 17 Inlet port 18 Outlet port 3 Reduction gear 5 Rotor blade 50 Rotating shaft 51 Support Bar 52 Ribbon blade 6 Eddy breaker 6A Upper vortex breaker 6B Middle vortex breaker 6C Lower vortex breaker 61 Breaker body 61S Guide action surface 62 Fixed bar D Conical ribbon mixing device M Motor W Workpiece θ Rake inclination angle

Claims (3)

Some of the processing tank or all formed into an inverted cone shape, the treated product by ribbon blade, which is equipped to the rotary blade equipped on the treatment tank is raised along the inner wall, vortex breaker the elevated treated Conical type that performs any one or more of processing, mixing, crushing, and drying while repeatedly dropping the processed product to the lower part of the processing tank by moving it near the center of the processing tank In the ribbon mixing apparatus, the eddy current breaker is formed by fixing the breaker body to the inner wall surface of the treatment tank using a fixed bar, and the breaker body is a surface that contacts the workpiece. A conical ribbon mixing apparatus characterized in that the surface is provided with a rake angle so as to disperse the force acting on the workpiece by the rotary blades .   2. The conical ribbon mixing apparatus according to claim 1, wherein the guide action surface of the breaker body is twisted.   3. The conical ribbon mixing apparatus according to claim 1, wherein the vortex breaker is provided below a middle height position of the treatment tank.

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